Reclosable vacuum storage bag having flat resealable means

Abstract

A reclosable vacuum storage bag that can be hermetically sealed by flat resealable means that extend across the full width of the bag. The flat resealable means are designed to provide a barrier to prevent ambient air from leaking into the evacuated interior volume of the bag. The storage bag is also provided with a plastic zipper. The flat resealable means can be arranged on the product side of the zipper, on the user side of the zipper, or in between two zippers installed in the storage bag.

1. A vacuum storage bag comprising:
 a receptacle having an interior volume and a mouth, said receptacle comprising first and second walls having respective lower portions that bound said interior volume and respective upper portions that form said mouth; 
 a valve assembly installed in an aperture in one of said first and second walls for evacuating air from said interior volume; 
 a dual zipper comprising first and second mutually interlocked zipper parts joined at opposite ends of said zipper, said first zipper part comprising a first base strip and first and second closure profiles projecting from one side of said first base strip, said first and second closure profiles being parallel to and spaced apart from each other, and said second zipper part comprising a second base strip and third and fourth closure profiles projecting from one side of said second base strip, said third and fourth closure profiles being parallel to and spaced apart from each other and respectively interlockable with said first and second closure profiles to form first and second closures, wherein said first base strip is joined to said upper portion of said first wall in a first band-shaped zone of joinder, and said second base strip is joined to said upper portion of said second wall in a second band-shaped zone of joinder, each of said first and second band-shaped zones of joinder being approximately parallel to said interlocked closure profiles when said mouth is straight and said first and second closures are closed; and 
 a flat valve having open and closed states and designed to remain closed when in said closed state while said interior volume of said receptacle is evacuated, said flat valve extending from a first side to a second side of said receptacle in a space between said first and second base strips and between said first and second closures and, in the closed state, blocking the passage of air through said flat valve, 
 wherein said first base strip comprises a multiplicity of holes disposed between said first and second closures, said space being in flow communication with said interior volume via said holes during evacuation of said interior volume via said valve assembly. 
 
     
     
       2. The bag as recited in  claim 1 , wherein said flat valve comprises first and second cohesive surfaces that cohere to each other along the entire length of said flat valve when said flat valve is in said closed state, said first and second cohesive surfaces being respectively supported by said first and second base strips. 
     
     
       3. The bag as recited in  claim 2 , wherein said first cohesive surface is a surface of a first coating applied on said first base strip, and said second cohesive surface is a surface of a second coating applied on said second base strip, said first and second coatings being made of a cohesive material. 
     
     
       4. A vacuum storage bag comprising:
 a receptacle having an interior volume and a mouth, said receptacle comprising first and second walls having respective lower portions that bound said interior volume and respective upper portions that form said mouth; 
 a valve assembly installed in an aperture in one of said first and second walls for evacuating air from said interior volume; 
 a dual zipper comprising first and second mutually interlocked zipper parts joined at opposite ends of said zipper, said first zipper part comprising a first base strip and first and second closure profiles projecting from one side of said first base strip, said first and second closure profiles being parallel to and spaced apart from each other, and said second zipper part comprising a second base strip and third and fourth closure profiles projecting from one side of said second base strip, said third and fourth closure profiles being parallel to and spaced apart from each other and respectively interlockable with said first and second closure profiles to form first and second closures separated by a zipper chamber that extends the full length of said first and second closures, wherein said first base strip is joined to said upper portion of said first wall in a first band-shaped zone of joinder, and said second base strip is joined to said upper portion of said second wall in a second band-shaped zone of joinder, each of said first and second band-shaped zones of joinder being approximately parallel to said interlocked closure profiles when said mouth is straight and said first and second closures are closed; and 
 a first coating made of tacky material that covers a portion of one of said first and second base strips, said first coating being exposed inside and extending the length of said zipper chamber, 
 wherein one of said first and second base strips comprises a multiplicity of holes disposed such that said zipper chamber is in flow communication with said interior volume of said receptacle via said holes and will be evacuated when said interior volume is evacuated via said valve assembly, said first and second base strips being sufficiently flexible that said first coating on one of said first and second base strips contacts an opposing surface of or a second coating on the other of said first and second base strips when said zipper chamber is evacuated. 
 
     
     
       5. The bag as recited in  claim 4 , wherein said first coating comprises a layer of low-tack adhesive or cohesive material.